National Museum of Nuclear Science & History
Ennis Peters was a staff worker at Los Alamos during the Manhattan Project.
F. D. Ethridge, Jr. worked for Clinton Laboratories at the X-10 Reactor.
Noland Varley worked for the United States Engineer District Office.
W. G. Chmielewski was a carpenter at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.